The catch
Audio-Technica ATH-M50x
It has neither Bluetooth nor active noise cancellation.
Side by side
ATH-M40x is the lighter wired recording pair, and it works if the included long cables suit your desk. ATH-M50x is the better pick when you also use a laptop or portable player and want the short 1.2 m lead in the box. Bluetooth, a microphone and ANC are absent from both.
Before you buy
Before the cable is added, M40x weighs about 16% less than M50x.
Where this comes from
15.8% = (285 - 240) / 285 × 100, using manufacturer weights without cable.
The catch
It has neither Bluetooth nor active noise cancellation.
The catch
The short straight cable that comes with the M50x is not in this box.


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ATH-M50x and ATH-M40x compared on supplied cables, weight and recording setup, including whether the short lead is worth paying extra for.
ATH-M40x is the lighter wired recording pair, and it works if the included long cables suit your desk. ATH-M50x is the better pick when you also use a laptop or portable player and want the short 1.2 m lead in the box. Bluetooth, a microphone and ANC are absent from both.
Which one fits
Less loose lead results from the M50x 1.2 m cable than from a 3 m cable.
M40x weighs 45 g less, but clamp and pad fit still need to be tried.
A straight 3 m lead comes with both.
No microphone is built into either supplied cable.
In practice
Before the cable is added, M40x weighs about 16% less than M50x.
15.8% = (285 - 240) / 285 × 100, using manufacturer weights without cable.
Next to a laptop, the short straight cable of the M50x is 60% shorter than the straight lead supplied with the M40x.
3 - 1.2 = 1.8 m, then 1.8 / 3 × 100 = 60%.
The same 3 m straight reach and a replaceable cable are already there on both.
A detachable 3 m straight cable appears in the manufacturer package lists for both models.
Plug in your setup
Start with how you listen. Charging over USB is not the same as playing audio over USB, and some headphones need power even on a cable. These answers are placeholders until you apply your own.
This model cannot play over Bluetooth.
This model cannot play over Bluetooth.
Battery figures are maker claims for the stated mode. They do not reflect measured travel time. Volume, codec, calls and battery age all change runtime. Closed earcups can still leak some sound. Weight alone does not predict comfort. USB audio needs a compatible source and cable. This check does not judge sound quality, mic quality or amplifier power.

Audio-Technica, ATH-M50x
This foldable wired pair ships with a short cable, a long one and a coiled one, so you can go from a laptop to an audio interface without buying another lead.

Audio-Technica, ATH-M40x
At 240 g, this wired studio model folds to go in a bag and has a replaceable cable. The leads in the box suit an interface or desktop setup better.
Spec by spec
| Spec | Audio-Technica ATH-M50x | Audio-Technica ATH-M40x | In practice |
|---|---|---|---|
| Weight without cable | 285 g | 240 g | Before any cable weight is counted, M40x saves 45 g. |
| Shortest supplied straight lead | 1.2 m | 3 m | On a small desk, M50x leaves less spare cable. |
| Longest supplied straight lead | 3 m | 3 m | Using their long lead, both reach the same interface position. |
| Supplied audio cables | Three | Two | What the M50x adds is a short straight cable and not an additional connection type. |
| Cable replacement | Detachable | Detachable | A fixed-cable repair is avoided on both if the lead fails. |
| Storage | Folds inward | Folds inward | M50x does not have a monopoly on portability. |
| Impedance | 38 ohms | 35 ohms | A difference this small says nothing about ranking loudness or sound quality. |
Trade-offs
Change of plan
Go with Audio-Technica ATH-M50x. Sitting at a laptop on the same desk, you may find the M50x short cable spares you more hassle than the higher model number suggests. It neither improves the source nor adds a microphone.
Go with Audio-Technica ATH-M40x. M40x already comes with a 3 m straight cable for a fixed interface or keyboard. If weight counts for more than a short lead, its 45 g reduction is a tangible reason to pick it.
Decision guide
For a lighter wired recording pair whose long cables suit your desk, go with ATH-M40x. If you also use a laptop or portable player and want the short 1.2 m lead in the box, go with ATH-M50x. Neither one adds Bluetooth, a microphone or ANC.
Sitting at a laptop on the same desk, you may find the M50x short cable spares you more hassle than the higher model number suggests. It neither improves the source nor adds a microphone.
M40x already comes with a 3 m straight cable for a fixed interface or keyboard. If weight counts for more than a short lead, its 45 g reduction is a tangible reason to pick it.
Driver diameter and response endpoints cannot tell you which tuning you will like. This page offers advice on connections and handling. It names no listening-test winner.
By the numbers
What we found across the headphones we compare, plus the checked facts behind each finding.
Only 17 of the 60 models checked meet every need here: “I want music even with a dead battery”, “My bag has no space left”, and “I connect to a headphone jack”.
17 models fit, out of 60 checkedHow we countedThe count uses each product's current fit ratings for “I want music even with a dead battery”, “My bag has no space left”, and “I connect to a headphone jack”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Audio-Technica ATH-M50x |
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| Audio-Technica ATH-M40x |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

The supplied 1.2 m straight lead is what you want.
See price & reviews on Amazon
A lighter headphone is the goal.
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